Bolt-lock.



M. F. GOSSWILLER.

BOLT LOCK.

APPFIGATION 11.31) MAY 27, 1913.

1,103,902. Patented July 14, 19m

wzyzyz'Z kr n ve n to r Attorneys STATES PATENT OFFICE.

MICHAEL FRANCIS GOSSWILLER, 0F TROY, MONTANA, ASSIGNOR 0F ONE-HALF TOWALTER BISSELL, OF TROY, MONTANA.

BOLT-LOCK.

Application filed May 27, 1913.

To all whom it may concern Be it known that I, MIonAnL F. Goss- WILLER,a citizen of the United States, residing at Troy, in the county ofLincoln and State of Montana, have invented a new and useful Bolt-Lock,of which the following is a specification.

This invention relates to improvements in bolt locks and moreparticularly to means whereby grease cup compressors will be lockedagainst unscrewing and at the same time allowed to turn freely in theopposite direction.

An object of the present invention is to provide a spring member bent inthe outline of a spiral and with the inner end thereof notched so as toengage the threaded portion of the compressor of a grease cup, therotation of the grease cup in one direction forcing the spring memberoutwardly therefrom and any rotation in the opposite direction tendingto wrap the spring therearound, which will effectually prevent the saidrotation.

A further object is to provide a spring member in the form of a narrowstrip of metal and to provide the inner contacting end thereof withgrooves or threads and to bend the said end sharply inward so that whenthe compressor or bolt tends to move outwardly or unscrew, the extremetransverse face of the spring member will be angularly disposed withrespect to the peripheral surface of the compressor or bolt so that thesharpened edge of the spring member will contact with the threads of thebolt or compressor and prevent the rotation thereof in the directionstated.

With the foregoing and other objects in View which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed, can be made within thescope of what is claimed, without departing from the spirit of theinvention.

In the drawings accompanying this specification and forming a partthereof, the preferable form of my invention is illustrated, in which pFigure 1 is a top plan view of a grease cup and threaded bolt-likecompressor and Specification of Letters Patent.

Patented. July 14, 1914..

Serial No. 770,232.

with my improved locking means secured thereto, the spring member beingin the position assumed when the compressor is turned clockwise. Fig. 2is a similar view showing the spring member as the bolt-like compressoris turned counter-clockwise.

- Fig. 3 is a view in elevation of'a compressor and grease cup withportions thereof broken away. Fig. 411 is a perspective view of thespring locking member.

Referring to the drawings in which similar reference numerals designatecorresponding parts throughout the several Views, 1 is a grease cupthreadedly secured to which is the cap 2. The cap is provided with acentral threaded aperture 3 through which extends the threadedcompressor 4. Attention is here called to the fact that with the lockingmeans as herein described it is not necessary to in any way mutilate orchange the construction of the compressor but it may be usedsubstantially in the form as found in practice. The cap 2 is providedwith two upwardly extending pins 5 and 6 secured thereto and which pinsare spaced some little distance apart and also away from the threadedaperture 3 of the cap. The locking member as illustrated in Fig. 4;comprises a shank or body portion 7 the end of which is curled as at 8,the curled portion fitting over the pin. 6 and held thereby. The springlocking member is formed of a strip of metal and is bent after themanner of a spiral to form the loop or hook-shaped portion 9 and theinwardly extending end 10, the transverse face 11 of which is providedwith the grooves 12 extending thereacross. The spring locking member ispositioned upon the cap 2 with the curled portion 8 thereof engaging theupstanding pin 6 and the outer free end 10 engaging the bolt orcompressor at a point substantially diametric with respect thereto. Thespring holding member is so bent prior to its insertion upon the cap sothat it is necessary to spring the same over the bolt which provides aconstant tension upon the end 10 of the spring tending to force thesameinto engagement with the threads of the compressor. The teeth 12 ofthe spring member are adapted to engage the threads of the compressor,to allow the rotation of the compressor in one direction and preventingthe rotation thereof in the opposite direef-ion.

Figs. 1 and 2 of the drawings illustrate the position of the lockingmember before and after attempting the rotation of the compressor in adirection which the holding member is adapted to prevent. In Fig; 1 theend 10 is removed from the pin 6 ap proximately, 180 degrees and thesquared face 11 of the holding member lies substantially tangential tothe periphery of the compressor threaded surface. lVhen the compressoris rotated in a counter clockwise direction which direction will tend tounscrew the compressor the body portion or shank 7 is drawn downwardlyagainst the surface of the compressor and the end 10 passes beyond thediametric point and the transverse face 11 assumes a position at anangle to the peripheral surface of the compressor so that the meetingand sharpened edge between the side and end walls of the holding memberwill contact with and tend to bite into the material of which thecompressor is formed and thereby securely and positively lock thecompressor against rotation in this direction, it being noted that themore force exerted upon the compressor to rotate the same in thedirection indicated, the greater will be the holding or reactive forceof the holding or looking member, these positions being illustrated inFig. 2. The pin 5 is positioned as illustrated and is so arranged as toprevent excessive movement of. the spring holding member when thecompressor is moved in a clockwise di rection which it is allowed to doso that grease and other material which may be disposed Within the cup 1is successfully ejected therefrom.

The threaded end of the locking member is adapted to keep the threads-ofthe bolt or compressor clean as the same is rotated downwardly into thecup. Furthermore with the locking member as I have described, theompressor is locked against rotation in one direction at any position sothat when it is desired to move the compressor downwardly it is merelynecessary to so do, the locking member immediately assuming a lockedposition should there be any tendency for a counter rotation of the saidcompressor. When it is desired to remove the compressor so that thegrease cup may be refilled by exerting a suitable, force upon the end'10 of the locking member, the same will be moved away from and out ofcontact with the compressor which allows v the same to be freely rotatedas desired. 7

One of the particular advantages accruing from the construction as Ihave outlined the same, lies in the fact that the locking means may beeasily installed upon any grease cup or similar article already in, useand does not require any'mutilation of the threads thereof, it beingnoted that those looking members requiring a grooveto be cut 1n the sideof the bolt or compressor allow the grease or material disposed withinthe cupto escape therethrough. .The use ofa locking member such as Ihave described takes the place of lock or jam nuts which when subjectedto sudden jars, etc., are liable to work loose. Furthermore the greaterthe force tending to rot'ate the bolt or com-c pressor in one direction,the .greater will be the reactive force exerted thereagainst.

The locking means such as I have described, may be used with bolts orrods threaded in a right or left handed direction, the only change beingthe change in position of the spring holding member; It is to be notedthat the locking means as I have provided in combination with acompressor may be used with equal advantageous results with bolts andthreaded rods, it being illustrated.

provided with an upright post, a second post spaoed a distance away fromthe first mentioned post and supported by the said nut,

the said spiral resilient spring member can ried by the first mentionedpost, the opposite end of said spiral spring member bent sharply inwardand normally resiliently engaging the bolt, the extreme free end of saidspiral spring member sharpened and adapted to bite into the boltthreads, the relative,

rotation of the bolt and nut in one direction forcing the spring memberawayv from the bolt threads, the said resilient spiral member heldagainst disengagement therefrom by means of the second post, theoppositerelative rotation of the, bolt and nut tending to draw the spring memberinto forced and frictional contact with the bolt for the prevention ofsuch rotation.

In testimony that I claim the foregoing as my own, I have hereto aflixedmy signa ture in the presence of two witnesses.

7 MICHAEL FRANCIS GOSSWILLER.

VVitnes'ses: i

HARRY D. VVEBs'rnn, GEO. CorrMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. (1.?

